Morris Products 97112 Insulated Dual Entry Splice, Black, 4 - 14 Wire Range, 1/8" Allen Hex, 1.2" Length, 1.45" Height Black Insulated Dual Entry Splice Electrical Power Connector - 2 Conductor Dual Entry Insulated Connector for low cost installations Optional wire entry from either side Dual Entry Insulated Connector is 6061-T6 Aluminum CU9AL Dual Rated for use with Copper and/or Aluminum wires Insulated Connector has rugged high-dielectric Rubber/Vinyl Coating Pre-Filled with Oxide Inhibitor